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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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package org.apache.juneau.transforms;

import java.util.*;

import org.apache.juneau.*;
import org.apache.juneau.parser.*;
import org.apache.juneau.transform.*;

/**
 * Transforms {@link Date Dates} to {@link Long Longs}.
 */
public class DateLongSwap extends PojoSwap<Date,Long> {

	/**
	 * Converts the specified {@link Date} to a {@link Long}.
	 */
	@Override /* PojoSwap */
	public Long swap(BeanSession session, Date o) {
		if (o == null)
			return null;
		return o.getTime();
	}

	/**
	 * Converts the specified {@link Long} to a {@link Date}.
	 */
	@Override /* PojoSwap */
	public Date unswap(BeanSession session, Long o, ClassMeta<?> hint) throws Exception {
		Class<?> c = (hint == null ? java.util.Date.class : hint.getInnerClass());
		if (c == java.util.Date.class)
			return new java.util.Date(o);
		if (c == java.sql.Date.class)
			return new java.sql.Date(o);
		if (c == java.sql.Time.class)
			return new java.sql.Time(o);
		if (c == java.sql.Timestamp.class)
			return new java.sql.Timestamp(o);
		throw new ParseException("DateLongSwap is unable to narrow object of type ''{0}''", c);
	}
}
